Systems, methods and computer program products for generating metadata and visualizing media content

ABSTRACT

The exemplary embodiments of the present invention provide a method for generating metadata for media content that includes a digital media file and includes retrieving a media content subset from a media content source, saving the received media content subset at a computing system, and generating metadata by processing the media content using the computing system. The method further includes associating generated metadata with media content to facilitate the visualization and navigation of the media content, and adding the metadata to at least one metadata repository designed for efficient retrieval of metadata elements.

CROSS-REFERENCE TO RELATED APPLICATION

This application is related to co-pending U.S. Patent applications entitled “SYSTEMS, METHODS AND COMPUTER PROGRAM PRODUCTS FOR INDEXING, SEARCHING AND VISUALIZING MEDIA CONTENT”, filed on Feb. 25, 2008, by Coffman et al., having and accorded Ser. No. 12/037,005, “SYSTEMS, METHODS AND COMPUTER PROGRAM PRODUCTS FOR THE CREATION OF ANNOTATIONS FOR MEDIA CONTENT TO ENABLE THE SELECTIVE MANAGEMENT AND PLAYBACK OF MEDIA CONTENT”, filed on Feb. 25, 2008, by Coffman et al., having and accorded Ser. No. 12/037,023, “SYSTEMS, METHODS AND COMPUTER PROGRAM PRODUCTS FOR THE USE OF ANNOTATIONS FOR MEDIA CONTENT TO ENABLE THE SELECTIVE MANAGEMENT AND PLAYBACK OF MEDIA CONTENT”, filed on Feb. 25, 2008, by Coffman et al., having and accorded Ser. No. 12/037,035, all of which are entirely incorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention generally relates to creation of related data for media content. Specifically, this application relates to creating metadata and visualization data for media content to enable efficient retrieval, visualization, navigation and playback of media content.

2. Description of Background

Generally, media content (e.g., such as audio or video streams or files) are sequentially played back from the beginning to the end of the file or stream; or at least from the beginning of the file or stream to a point at which the listener/viewer decides to stop playback. A podcast is generally defined as digital media file (e.g., an MP3 file) that can be freely distributed (e.g. using USB memory keys or writable CDs) or over a network via the use of a known Uniform Resource Identifier, wherein the files may be identified as being available for access to the general public or restricted to a group of users. The digital media files are usually offered for direct download via a network.

Podcasts are further distinguished in that the distribution of the digital media files can comprise the ability of an end user to subscribe, syndicate, or automatically download updates of a digital media file. Conventional media playback techniques are adequate in some cases, but if a media file has different sections of interest within it, a listener might want to play only one segment of the media content.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a system, method, and computer program product for creating metadata and visualization data for media content.

An exemplary embodiment includes a method for generating metadata for media content that includes a digital media file includes retrieving a media content subset from a media content source, saving the received media content subset at a computing system, and generating metadata by processing the media content using the computing system. The method further includes associating generated metadata with media content to facilitate the visualization and navigation of the media content, and adding the metadata to at least one metadata repository designed for efficient retrieval of metadata elements.

Another exemplary embodiment includes a system for generating metadata for media content that includes a digital media file. Briefly described, in architecture, one embodiment of the system, among others, can be implemented as follows. The system includes a retrieving module that receives a media content subset from a media content source, a saving module that saves the received media content subset on a computing system, and a generating module that generates metadata by processing the media content using the computing system. The system further includes an associating module that associates the generated metadata with the media content to facilitate visualization of the media content, and a adding module that adds the metadata to at least one metadata repository designed for efficient retrieval of the metadata elements.

A further exemplary embodiment includes a computer program product for generating metadata for media content that includes a digital media file, the computer program product comprising: a computer-readable storage medium for storing instructions for creating metadata and visualization data, the computer program product comprising a method of generating metadata for media content. The method further includes retrieving a media content subset from a media content source, saving the received media content subset at a computing system, and generating metadata by processing the media content using the computing system. The method further includes associating generated metadata with media content to facilitate the visualization and navigation of the media content, and adding the metadata to at least one metadata repository designed for efficient retrieval of metadata elements.

Additional features and advantages are realized through the techniques of the present invention. Other embodiments and aspects of the invention are described in detail herein and are considered a part of the claimed invention. For a better understanding of the invention with advantages and features, refer to the description and to the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The subject matter that is regarded as the invention is particularly pointed out and distinctly claimed in the claims at the conclusion of the specification. The foregoing and other objects, features, and advantages of the invention are apparent from the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a block diagram of a system for generating metadata for media content in an exemplary embodiment.

FIG. 2 is a block diagram illustrating an example of a computer utilizing the metadata system of the exemplary embodiment, as shown in FIG. 1

FIG. 3 is a flow chart illustrating the operation of an exemplary embodiment of the metadata system in the computer according to the principles of the present invention, as shown in FIGS. 1 and 2.

FIG. 4 is a flow chart illustrating the operation of an exemplary embodiment of the metadata generation and indexing processes in the computer according to the principles of the present invention, as shown in FIGS. 2 and 3.

FIG. 5 is a flow chart illustrating the operation of an exemplary embodiment of the search visualization and navigation processes in the computer according to the principles of the present invention, as shown in FIGS. 2 and 3.

FIG. 6 illustrates an exemplary screenshot of a representation of the results of a user search presented within a timeline representative of the media content, wherein the timeline is annotated with index points.

The detailed description explains the preferred embodiments of the invention, together with advantages and features, by way of example with reference to the drawings.

DETAILED DESCRIPTION OF THE INVENTION

One or more exemplary embodiments of the invention are described below in detail. The disclosed embodiments are intended to be illustrative only since numerous modifications and variations therein will be apparent to those of ordinary skill in the art.

The exemplary embodiments of the present invention comprise solutions that provide mechanisms that enable a listener or viewer of a digital media file to visualize the structure of the content of a media file, and then directly access and playback subsections of the media content in which the media user is interested. As such, the content of a media file is initially analyzed to determine the specific attributes of its media structure.

Thereafter, metadata is created to describe the structural attributes of the media file. The implementation of such analysis can create indices based on transcripts that are associated with the media content, the length and location of media segments. In addition, the identity of a speaker within an audio segment can be determined. Furthermore, additional data pertaining to a media segment within the media content such as the location of the media recording event, the time of the media recording, etc, can also be ascertained.

The exemplary embodiments of the present invention include a method that comprises retrieving at least one media file, analyzing the at least one media file in order to determine playback characteristics of content that is comprised within the media file, and creating index points for data elements comprised within the media file content. The method also comprises associating metadata with each created index point that is associated with the media file content, wherein the metadata comprises media content information in regard to the content of the at least one media file and storing the index points and the metadata that is associated with the index points at a database.

Also comprised within the exemplary embodiments is a method for receiving a query for information that is comprised within the at least one media file and accessing the database to search the metadata that is associated with the at least one media file in response to the received query. Additionally, an index point is returned for each identified query hit that is associated with the media file content, wherein the index point is associated with data elements that are comprised within the at least one media file, and displaying in response to the received query a listing of media file reference hit results that reference data elements that are comprised within the at least one media file.

Within further exemplary embodiments of the present invention, a user is provided with the capability to search for media content, or segments within the media content, through the use of a plethora of search criteria. The results of the user's search can then be visually displayed to the user, thus allowing the user to browse the structure of media content that satisfies their search criteria. Within exemplary aspects of the exemplary embodiment, media content searches are enabled through the use metadata that is added to the media content after an analysis is performed upon the media content.

Once a list of matching media content is located, the matching media content is presented visually to the user, wherein thereafter the user can select and playback subsections of the media content the user wants to consume. The metadata associated with media content can include a wide variety of associative information parameters, including but not limited to the author or group of authors of a media file, location and time the media file was created, a time-stamped text transcription associated with the audio track of a media file, the presence or absence of individuals within an audience at the recording of a media file, the media device used for capturing or recording media file content, the quality and format of media recording, access control listings.

Within the exemplary embodiments of the present invention, index points are added within the media content of a media file in order to enable the enhanced presentation of search results and playback of the digital media file. An index point serves as an association between a discrete section of media and the metadata that is related to content of a media file. As used herein, an index point is defined as including the metadata and the information that is needed to identify the associated section of the media file.

Index points for media content are logically part of the media content. As such, index points may be physically stored with their associated media content at a media content repository or they may be stored elsewhere; or a combination of the two storage choices may be implemented. The storage of index points with the media content makes it easy to transfer the index points with the content; while the storage of index points separately (e.g., within an indexed database) makes the index points easier to search. An indexed database can either be stored remotely or locally with the media content repository. Such configurations allow for rapid updates to be performed to the database index as media content is added to or deleted from the media content repository.

The media content repository and index database can be further replicated for purposes of high availability and efficient access to the media content and index points within a distributed environment. The media content in the repository can be delivered to a user as files, streams, or interactive objects. The use of the indexed database further allows for searches to be performed upon media content using the metadata that is associated with the media content, the media section characteristics of the media content, or a combination of the two in order to retrieve stored index points. In such a configuration, the database implementation is optimized for the fast retrieval of index points. Such an implementation can be, but is not limited to, an information retrieval library (e.g., such as Lucene) or a relational database system (e.g., such as DB2).

Within the exemplary embodiments a transcript of the media content can be used to create a set of index points that will be associated with a media file. A transcript can automatically be created using conventional speech recognition technologies or by the use of a manual transcription service. A time-stamped association is made between the elements of the transcript and the discrete element parts of the contents of a media file. Once the media file has been enhanced with index points, the transcript that is associated with the media file can then be searched for terms that correlate to media content information. Thereafter, the search results can be used to build a structured view that shows the occurrence of the search terms within the media file content.

Searches within the exemplary embodiments can include query words and phrases. For example, a query can be phrased and be specified along the lines of: Find me all occurrences of the word ‘innovation’ within this media content. Another search could specify: Find all media elements in the repository that include the word ‘innovation’. More complex searches could search for occurrences of phrases and combinations of phrases that can be constructed with standard Boolean algebra. A search that includes time criteria could specify: Find all media elements in the repository that include the word ‘innovation’ in the first two minutes of the media element.

Another variation would state: find sections of the media content where the word ‘innovation’ occurs within a time interval (e.g., 10 seconds) from the word research. The time interval can be specified through the query. The time interval concept can be applied to combinations of terms as well. For example, a query could state: Find a section where ‘innovation’ was mentioned but research was NOT mentioned within 30 seconds from when ‘innovation’ was mentioned. In the instance that the index point's database is relational, searches are implemented as SQL queries or as custom programs that use at least one SQL query.

Referring now to the drawings, in which like numerals illustrate like elements throughout the several views, FIG. 1 illustrates an example of the basic components of a system 10 using the metadata system used in connection with the preferred embodiment of the present invention. The system 10 includes a server 11 and the remote devices 15, 16, 17 or 21 that utilize the metadata system of the present invention.

Each remote device 15-17 and 21 has applications and can have a local database 22. Server 11 contains applications, and a database 12 that can be accessed by remote device 15-17 and 21 via connections 14(A-E), respectively, over network 13. The server 11 runs administrative software for a computer network and controls access to itself and database 12. The remote device 15-17 and 21 may access the database 12 over a network 13, such as but not limited to: the Internet, a local area network (LAN), a wide area network (WAN), via a telephone line using a modem (POTS), Bluetooth, WiFi, cellular, optical, satellite, RF, Ethernet, magnetic induction, coax, RS-485, the like or other like networks. The server 11 may also be connected to the local area network (LAN) within an organization.

The remote device 15-17 may each be located at remote sites. Remote device 15-17 and 21 include but are not limited to, PCs, workstations, laptops, handheld computer, pocket PCs, PDAs, pagers, WAP devices, non-WAP devices, cell phones, palm devices, printing devices and the like.

Thus, when a user at one of the remote devices 15-17 desires to access the metadata from the database 12 on the server 11, the remote device 15-17 communicate over the network 13, to access the server 11 and database 12.

Remote device 21 may be a third party computer system 21 and database 22 that can be accessed by the metadata system server 11 in order to obtain information for dissemination to the remote devices 15-17. Data that is obtained from third party computer system 21 and database 22 can be stored on the metadata system server 11 in order to provide later access to the user remote devices 15-17. It is also contemplated that for certain types of data that the remote user devices 15-17 can access the third party data directly using the network 13. It is also contemplated in an alternative embodiment, that computer system 21 and database 22 to be accessed by remote user devices 15-17 through server 11 which acts a conduit.

Illustrated in FIG. 2 is a block diagram demonstrating an example of server 11, utilizing the metadata system 100 of the exemplary embodiment, as shown in FIG. 1. Server 11 includes, but is not limited to, PCs, workstations, laptops, PDAs, palm devices and the like. The processing components of the remote devices 15-17 and 21 are similar to that of the description for the server 11 (FIG. 2). As illustrated, the remote device 15-17 and 21 includes many of the same components as server 11 described with regard to FIG. 2, and therefore will not be described in detail for the sake of brevity. Hereinafter, the remote devices 15-17 and 21 are devices that will be referred to as remote devices 15.

Generally, in terms of hardware architecture, as shown in FIG. 2, the server 11 include a processor 41, memory 42, and one or more input and/or output (I/O) devices (or peripherals) that are communicatively coupled via a local interface 43. The local interface 43 can be, for example but not limited to, one or more buses or other wired or wireless connections, as is known in the art. The local interface 43 may have additional elements, which are omitted for simplicity, such as controllers, buffers (caches), drivers, repeaters, and receivers, to enable communications. Further, the local interface 43 may include address, control, and/or data connections to enable appropriate communications among the aforementioned components.

The processor 41 is a hardware device for executing software that can be stored in memory 42. The processor 41 can be virtually any custom made or commercially available processor, a central processing unit (CPU), data signal processor (DSP) or an auxiliary processor among several processors associated with the server 11, and a semiconductor based microprocessor (in the form of a microchip) or a macroprocessor. Examples of suitable commercially available microprocessors are as follows: an 80x86 or Pentium series microprocessor from Intel Corporation, U.S.A., a PowerPC microprocessor from IBM, U.S.A., a Sparc microprocessor from Sun Microsystems, Inc, a PA-RISC series microprocessor from Hewlett-Packard Company, U.S.A., or a 68xxx series microprocessor from Motorola Corporation, U.S.A.

The memory 42 can include any one or combination of volatile memory elements (e.g., random access memory (RAM, such as dynamic random access memory (DRAM), static random access memory (SRAM), etc.)) and nonvolatile memory elements (e.g., ROM, erasable programmable read only memory (EPROM), electronically erasable programmable read only memory (EEPROM), programmable read only memory (PROM), tape, compact disc read only memory (CD-ROM), disk, diskette, cartridge, cassette or the like, etc.). Moreover, the memory 42 may incorporate electronic, magnetic, optical, and/or other types of storage media. Note that the memory 42 can have a distributed architecture, where various components are situated remote from one another, but can be accessed by the processor 41.

The software in memory 42 may include one or more separate programs, each of which comprises an ordered listing of executable instructions for implementing logical functions. In the example illustrated in FIG. 2, the software in the memory 42 includes a suitable operating system (O/S) 51 and the metadata system 100 of the present invention. As illustrated, the metadata system 100 of the present invention comprises numerous functional components including, but not limited to, the metadata generation and indexing processes 120, and search visualization and navigation processes 140.

A non-exhaustive list of examples of suitable commercially available operating systems 51 is as follows (a) a Windows operating system available from Microsoft Corporation; (b) a Netware operating system available from Novell, Inc.; (c) a Macintosh operating system available from Apple Computer, Inc.; (e) a UNIX operating system, which is available for purchase from many vendors, such as the Hewlett-Packard Company, Sun Microsystems, Inc., and AT&T Corporation; (d) a LINUX operating system, which is freeware that is readily available on the Internet; (e) a run time Vxworks operating system from WindRiver Systems, Inc.; or (f) an appliance-based operating system, such as that implemented in handheld computers or personal data assistants (PDAs) (e.g., Symbian OS available from Symbian, Inc., PalmOS available from Palm Computing, Inc., and Windows CE available from Microsoft Corporation).

The operating system 51 essentially controls the execution of other computer programs, such as the metadata system 100, and provides scheduling, input-output control, file and data management, memory management, and communication control and related services. However, it is contemplated by the inventors that the metadata system 100 of the present invention is applicable on all other commercially available operating systems.

The metadata system 100 may be a source program, executable program (object code), script, or any other entity comprising a set of instructions to be performed. When a source program, then the program is usually translated via a compiler, assembler, interpreter, or the like, which may or may not be included within the memory 42, so as to operate properly in connection with the O/S 51. Furthermore, the metadata system 100 can be written as (a) an object oriented programming language, which has classes of data and methods, or (b) a procedure programming language, which has routines, subroutines, and/or functions, for example but not limited to, C, C++, C#, Pascal, BASIC, API calls, HTML, XHTML, XML, ASP scripts, FORTRAN, COBOL, Perl, Java, ADA, .NET, and the like.

The I/O devices may include input devices, for example but not limited to, a mouse 44, keyboard 45, scanner (not shown), microphone (not shown), etc. Furthermore, the I/O devices may also include output devices, for example but not limited to, a printer (not shown), display 46, etc. Finally, the I/O devices may further include devices that communicate both inputs and outputs, for instance but not limited to, a NIC or modulator/demodulator 47 (for accessing remote devices, other files, devices, systems, or a network), a radio frequency (RF) or other transceiver (not shown), a telephonic interface (not shown), a bridge (not shown), a router (not shown), etc.

If the server 11 is a PC, workstation, intelligent device or the like, the software in the memory 42 may further include a basic input output system (BIOS) (omitted for simplicity). The BIOS is a set of essential software routines that initialize and test hardware at startup, start the O/S 51, and support the transfer of data among the hardware devices. The BIOS is stored in some type of read-only-memory, such as ROM, PROM, EPROM, EEPROM or the like, so that the BIOS can be executed when the server 11 is activated.

When the server 11 are in operation, the processor 41 is configured to execute software stored within the memory 42, to communicate data to and from the memory 42, and to generally control operations of the server 11 are pursuant to the software. The metadata system 100 and the O/S 51 are read, in whole or in part, by the processor 41, perhaps buffered within the processor 41, and then executed.

When the metadata system 100 is implemented in software, as is shown in FIG. 2, it should be noted that the metadata system 100 can be stored on virtually any computer readable medium for use by or in connection with any computer related system or method. In the context of this document, a computer readable medium is an electronic, magnetic, optical, or other physical device or means that can contain or store a computer program for use by or in connection with a computer related system or method.

The metadata system 100 can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. In the context of this document, a “computer-readable medium” can be any means that can store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. The computer readable medium can be, for example but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, device, or propagation medium.

More specific examples (a nonexhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic) having one or more wires, a portable computer diskette (magnetic or optical), a random access memory (RAM) (electronic), a read-only memory (ROM) (electronic), an erasable programmable read-only memory (EPROM, EEPROM, or Flash memory) (electronic), an optical fiber (optical), and a portable compact disc memory (CDROM, CD R/W) (optical). Note that the computer-readable medium could even be paper or another suitable medium, upon which the program is printed or punched, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

In an alternative embodiment, where the metadata system 100 is implemented in hardware, the metadata system 100 can be implemented with any one or a combination of the following technologies, which are each well known in the art: a discrete logic circuit(s) having logic gates for implementing logic functions upon data signals, an application specific integrated circuit (ASIC) having appropriate combinational logic gates, a programmable gate array(s) (PGA), a field programmable gate array (FPGA), etc.

FIG. 3 is a flow chart illustrating the operation of an exemplary embodiment of the metadata system 100 in a computer according to the principles of the present invention, as shown in FIGS. 1 and 2. The metadata system 100 of the present invention provides instructions and data in order to enable a user on a remote device to create related data (i.e. metadata) for media content.

First at step 101, the metadata system 100 is initialized. This initialization includes the startup routines and processes embedded in the BIOS of the server 11. The initialization also includes the establishment of data values for particular data structures utilized in the metadata system 100.

At step 102, the metadata system 100 waits to receive an action request. After receiving an action request, the metadata system 100 determines what type of action is being requested. At step 103, the metadata system 100 determines if a metadata generation action has been requested. A metadata generation action is one where the user on a remote device 15 submits a request for metadata generation on server 11. If it is determined at step 103 that a metadata generation action has not been requested, then the metadata system 100 proceeds to step 105. However, if it is determined at step 103 that a metadata generation action has been requested, then the metadata generation and indexing processes are performed at step 104. The metadata generation and indexing processes are herein defined in further detail with regard FIG. 4.

At step 105, the metadata system 100 determines if a metadata search action has been requested. A metadata search action is one where metadata is queried on database 12 or on a third parties database 22. If it is determined at step 105 that a metadata search action has not been requested, then the metadata system 100 proceeds to step 107. However, if it is determined at step 105 that a metadata search action has been requested, then the metadata search visualization and navigation processes are performed at step 106. The metadata search visualization and navigation processes are herein defined in further detail with regard FIG. 5.

At step 107, it is determined if the metadata system 100 is to wait for additional action request. If it is determined at step 107 that the metadata system is to wait to receive additional actions, then the metadata system 100 returns to repeat steps 102 through 107. However, if it is determined at step 107 that there are no more actions to be received, then the metadata system 100 then exits at step 109.

FIG. 4 is a flow chart illustrating the operation of an exemplary embodiment of the metadata generation and indexing processes 120 in the computer according to the principles of the present invention, as shown in FIGS. 2 and 3. In the metadata generation and indexing processes 120, metadata is created to describe the structural attributes of the media file. The implementation can create indices based on transcripts that are associated with the media content, the length and location of media segments. In addition, the identity of a speaker within an audio segment can be determined. Furthermore, additional data pertaining to a media segment within the media content such as the location of the media recording event, the time of the media recording, etc, can also be ascertained.

First at step 121, the metadata generation and indexing processes 120 is initialized. This initialization includes the startup routines and processes embedded in the BIOS of the server 11. The initialization also includes the establishment of data values for particular data structures utilized in the metadata generation and indexing processes 120.

At step 122, the metadata generation and indexing processes 120 receives a digital data file from storage or from another device. After receiving a digital file, metadata generation and indexing processes 120 then stores the digital data file to memory. The memories utilized can be memory 42 or metadata database 12 (FIG. 1).

At step 123, the metadata generation and indexing processes 120 evaluates the digital data file and generates metadata and transcription data. The content of a media file is initially analyzed to determine the specific attributes of its media structure. The implementation of such analysis can create indices based on transcripts that are associated with the media content, the length and location of media segments. In addition, the identity of a speaker within an audio segment can be determined. Furthermore, additional data pertaining to a media segment within the media content such as the location of the media recording event, the time of the media recording, etc, can also be ascertained. The metadata generation and indexing processes 120 creates index points for data elements comprised within the media file content. The metadata generation and indexing processes 120 also comprises associating metadata with each created index point that is associated with the media file content. Index points are added within the media content of a media file in order to enable the enhanced presentation of search results and playback of the digital media file. An index point serves as an association between a discrete section of media and the metadata that is related to content of a media file. As used herein, an index point is defined as including the metadata and the information that is needed to identify the associated section of the media file. Index points for media content are logically part of the media content.

At step 124, the metadata generation and indexing processes 120 stores the index points and the metadata that is associated with the index points. Index points and the metadata may be physically stored with their associated media content at a media content repository or they may be stored elsewhere; or a combination of the two storage choices may be implemented. The storage of index points with the media content makes it easy to transfer the index points with the content; while the storage of index points (e.g., within an indexed database) makes the index points easier to search. An indexed database can either be stored remotely in DB 12 or locally in 22 with the media content repository. Such configurations allow for rapid updates to be performed to the database index as media content is added to or deleted from the media content repository.

The media content repository and index database can be further replicated for purposes of high availability and efficient access to the media content and index points within a distributed environment. The media content in the repository can be delivered to a user as files, streams, or interactive objects.

At step 125, it is determined if the metadata generation and indexing processes 120 is to wait for additional action requests. If it is determined at step 125 that the metadata generation and indexing processes 120 is to wait to receive additional actions, then metadata generation and indexing processes 120 returns to repeat steps 122 through 125. However, if it is determined at step 125 that there are no more actions to be received, then metadata generation and indexing processes 120 then exits at step 129.

FIG. 5 is a flow chart illustrating the operation of an exemplary embodiment of the search, visualization and navigation processes 140 in the computer according to the principles of the present invention, as shown in FIGS. 2 and 3. A user is provided with the capability to search for media content, or segments within the media content, through the use of a plethora of search criteria. The results of the user's search can then be visually displayed to the user, thus allowing the user to browse the structure of media content that satisfies their search criteria. The media content searches are enabled through the use metadata that was added to the media content after an analysis is performed upon the media content.

Once a list of matching media content is located, the matching media content is presented visually to the user, wherein thereafter the user can select and playback subsections of the media content the user wants to consume. The metadata associated with media content can include a wide variety of associative information parameters, including but not limited to the author or group of authors of a media file, location and time the media file was created, a time-stamped text transcription associated with the audio track of a media file, the presence or absence of individuals within an audience at the recording of a media file, the media device used for capturing or recording media file content, the quality and format of media recording, access control listings.

First at step 141, the search, visualization and navigation processes 140 is initialized. This initialization includes the startup routines and processes embedded in the BIOS of the server 11. The initialization also includes the establishment of data values for particular data structures utilized in the search, visualization and navigation processes 140.

At step 142, the search, visualization and navigation processes 140 receive metadata search parameters from a user's query. Searches within the exemplary embodiments can include query words and phrases. For example, a query can be phrased and be specified along the lines of: Find me all occurrences of the word ‘innovation’ within this media content. Another search could specify: Find all media elements in the repository that include the word ‘innovation’. More complex searches could search for occurrences of phrases and combinations of phrases that can be constructed with standard Boolean algebra. A search that includes a time criteria could specify: Find all media elements in the repository that include the word ‘innovation’ in the first two minutes of the media element.

Another variation would state: find sections of the media content where the word ‘innovation’ occurs within a time interval (e.g., 10 seconds) from the word research. The time interval can be specified through the query. The time interval concept can be applied to combinations of terms as well. For example, a query could state: Find a section where ‘innovation’ was mentioned but research was NOT mentioned within 30 seconds from when ‘innovation’ was mentioned. In the instance that the index point's database is relational, searches are implemented as SQL queries or as custom programs that use at least one SQL query.

At step 143, the search, visualization and navigation processes 140 retrieve the media content used to generate the matching query metadata terms. At step 144, the search, visualization and navigation processes 140 generate a ranked list of search results. This rank list of search results could be formatted in a number of different ways. One way would be to rank the list of search results by a score value. The score value would evaluate the number of hits of a search term within the particular search result. Other ways to rank the list of search results include, but are not limited to the duration of the media content, the type of search results, the file format of the search results and the like.

At step 145. the search, visualization and navigation processes 140 generate the visualization of media contents for the ranked list of search results. The visualization of the media content in the ranked list is then displayed at step 146. An exemplary screenshot of a representation of the results of a user search presented within a timeline representative of the media content is herein defined in further detail with regard FIG. 6.

At step 151, the search, visualization and navigation processes 140 determines if the user has indicated the initiation of a new query. If it is determined at step 151 that the user has initiated a new query, then the search, visualization and navigation processes 140 returns to repeat steps 142 through 151. However, if it is determined at step 151 that the user has not initiated a new query, then the search, visualization and navigation processes 140 provides for user interaction with the media content and visualization at step 152. At step 153, the search, visualization and navigation processes 140 determines if the user has indicated the repeated interaction with the media content and visualization. If it is determined at step 153 that the user has initiated repeated interaction, then the search, visualization and navigation processes 140 returns to repeat steps 152 through 153.

However, if it is determined at step 153 that the user has not initiated repeated interaction, then the search, visualization and navigation processes 140 determines if the user has indicated the initiation of a new query. If it is determined at step 154 that the user has initiated a new query, then the search, visualization and navigation processes 140 returns to repeat steps 142 through 151. However, if it is determined at step 154 that the user has not initiated a new query, then the search, visualization and navigation processes 140 then exits at step 159.

FIG. 6 illustrates an exemplary screenshot 200 of a representation of the results of a user search presented within a timeline representative of the media content, wherein the timeline is annotated with index points. Query summary results 211 may be provided to indicate the number of search results and the weighted value of the query results. The query results also may contain a indication of the media content type 212. An item in the ranked list of the search results may comprise media title 221 weighted score 213 and duration 214 of the analyzed media.

Index points 231 & 233 that have a simple visualization, such as a word and its position, are presented partially or fully. Index points that require more complex visualization (i.e., using sets or hierarchies) are initially presented in a compact way wherein a means is provided for the user to expand the structure of the displayed index point visualization. The user can select any index point within the timeline and use the index point to play back just a particular segment of interest within the media content without having to playback the content from the beginning (and without having to aimlessly fast-forward through the content without real guidance).

To assist with navigation and selective playback of media file content, the displayed timeline can be zoomed and panned to provide flexibility for the user. Each individual timeline shown can be zoomed and panned independently. As the user zooms in on the timeline more details within the timeline may be revealed. At coarser resolutions the index points and associated metadata may be aggregated to make the visualization meaningful. For example, if the word ‘innovation’ appears one hundred times in a time interval corresponding to a small part of the visual timeline it will not be possible to annotate this portion of the timeline with a hundred markers. In such a case a bar over the interval or a single annotation 231 may quantify the number of occurrences of the word ‘innovation’ that occurred in that time interval.

As the user zooms in, more details of the timeline will be shown. The user may further interact with graphical markers for index points by one of more methods such as for example, but not limited to, touching, tapping, activating, or mousing over the graphical marker. Such interaction can reveal additional metadata-such as for example, but not limited to, the word as indicated by 233A, the name of the speaker who said the word ‘technology’ or the exact time at which the word was uttered. The user may then select one or a group of index points within the media content for batched playback.

Conventional technologies can be employed for the timeline zooming and panning operations. For example, the panning may be accomplished by allowing the user to drag the timeline to the left or right for example with a mouse or a touch stroke. Zooming may be accomplished by selecting two points on the timeline and dragging one of the points. Alternatively, auxiliary controls such as visual elements or a mouse wheel and pinching gestures on touch screens, can be used. The above methods are exemplary and one of ordinary skill in the art will realize other mechanisms can be used for zooming and panning.

Within the exemplary embodiments of the present invention index points can also be created for a media file through the coordination of information in regard to a presentation (e.g., such as a slide presentation) that is associated with a media content. In this case, the index points are utilized to represent slide changes or the triggering of slide animations. For example, the user may wish to skip a series of introductory slides and remarks and jump directly to a particular slide in a visual presentation in addition to listening to an audio portion corresponding to a slide while viewing the slide. These index points can be created by collecting additional data during the recording of the presentation (e.g., such as the start and end times of the presentation when each slide is viewed). Such data may include when the page-up and page-down keys were pressed to initiate the change of slides. Additionally, in the event that a slide was shown several times during the presentation, each set of start and end times is recorded. A structured view of the media in this case can show a histogram of the time spent on the slides and give a viewer a quick indication of the important slides. Using these techniques a viewer can grasp the important aspects of the presentation in less time than it takes to sequentially watch the presentation from start to end.

Another way to create index points is by identifying and associating speaker identification information with the media file content. In this instance, the index points will occur in the instance that the speaker as recorded on the media file changes during a recording event. This technique is useful in a teleconference or a meeting when there are several participants. Several technologies can be used to identify when a speaker changes. For example, voice-printing schemes (which are analogous to finger prints) that use spectral analysis of the speech signal to identify speakers may be used. This technique is especially useful when the speakers are in the same physical location. Higher success may be obtained in such settings by using an array of microphones to record the conversation. Another method to identify a speaker when the speaker is communicating over a phone or a media channel from another location is to tag the content with source information such as network address or port or telephone numbers and then associate parts of the media originating from that person with a suitable identifier. The network address or phone number can be further looked up in registered auxiliary databases to determine the identity of the speaker. The start and stop times for each speaker will be recorded each time she speaks.

Once such metadata has been recorded, a structured view of the media file can be displayed to show how many times a particular individual spoke and for how long an individual spoke. Histograms can be displayed to show the total time for which each speaker spoke. Using such structured views, the user can listen to all the segments within the media file where a particular individual spoke. Such rendering and consumption of content is quite different from the way audio and video are consumed today. The user may also listen only to the speaker who spoke for most of the time, or may choose to ignore that speaker. Once such information is recorded, the search interface can be extended to search for portions of media (e.g., instances where the word “innovation” was spoken by a particular individual).

It should be noted that different categories of index points can be searched in a combined query in a general fashion. For example if the location where the media file was recorded is part of the metadata information then a search query could take the form of: When did person X speak word Y while he was in location Z. If additional metadata is provided that records who was present when the media file was recorded, a more complex query would take the form: When did person X speak word Y while he was in location Z and persons J and K were in the audience. The physical presence of individual audience members can be detected by having the participants wear smart tags or tags on users' devices (e.g., such as badges and cell phones that utilize Bluetooth connections or teleconference data that maintains lists of connected participants, etc.).

In addition to being simple scalar elements, each index point may also serve as a set/vector or a hierarchical element, therefore adding a rich, flexible means of annotation to the media file content. A single point in a content might, for instance, be associated with a set of metadata, such as time, speaker, phrase, and location. As index points can be associated with the entire media content, searching the index point database can be used to retrieve from a media repository a collection of media content that satisfies some criteria. This is particularly useful for index points representing search terms, tags, comments, and speaker identification, allowing a media content repository to be searched for specific index points. For example a user might be interested in retrieving all the media that was downloaded by user X. Another user might be interested in locating all media files that were created in July by person K.

The index points can also be used to extract media segments of the content repository. For example portions of the media content spoken by person X can be concatenated to produce new, dynamically created content that can be delivered as a separate file or as a media stream. They can be used to control playback of the media content in a more efficient way.

Any process descriptions or blocks in flow charts should be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps in the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.

It should be emphasized that the above-described embodiments of the present invention, particularly, any “preferred” embodiments, are merely possible examples of implementations, merely set forth for a clear understanding of the principles of the invention. Many variations and modifications may be made to the above-described embodiment(s) of the invention without departing substantially from the spirit and principles of the invention. All such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and protected by the following claims. 

1. A method for generating metadata for media content that includes a digital media file, the method comprising: retrieving a media content subset from a media content source; saving the received media content subset at a computing system; generating metadata by processing the media content using the computing system; associating generated metadata with media content to facilitate the visualization and navigation of the media content, thereby visually presenting associative information parameters of the media content enabling visual navigation of the media content; and adding the metadata to at least one metadata database for retrieval of metadata elements, wherein the metadata generated is a synchronized textual transcript of the audio recording, wherein the synchronized textual transcript includes time offsets of recorded words.
 2. The method in claim 1, wherein the processing of the media content received by the computing system involves at least one remote computing system accessible to the computing system.
 3. The method in claim 1, wherein the at least one metadata repository is stored on the computing system.
 4. The method in claim 1, wherein the at least one metadata repository is stored on at least one remote computing system.
 5. The method of claim 1, wherein the digital media file is an audio recording.
 6. The method of claim 1, wherein the metadata is generated from components other than the digital file included in the media content.
 7. A system for generating metadata for media content that includes a digital media file, comprising: a device for sending a request to generate metadata; and a processor for receiving the request, wherein the processor performs a method comprising: retrieving a media content subset from a media content source; saving the received media content subset on a computing system; generating metadata by processing the media content; associating the generated metadata with the media content to facilitate visualization of the media content, thereby visually presenting associative information parameters of the media content enabling visual navigation of the media content, and adding the metadata to at least one metadata database for retrieval of metadata elements, wherein the metadata generated is a synchronized textual transcript of the audio recording, wherein the synchronized textual transcript includes time offsets of recorded words.
 8. The system of claim 7, wherein the media content from at least one remote computing system accessible to the processor.
 9. The system of claim 7, wherein the at least one metadata repository is stored on the processor.
 10. The system of claim 7, wherein the at least one metadata repository is stored on at least one remote computing system.
 11. The system of claim 7, wherein the digital media file is an audio recording.
 12. The system of claim 7, wherein the metadata is generated from components other than the digital file included in the media content.
 13. A computer program product for generating metadata for media content that includes a digital media file, the computer program product comprising: a tangible storage medium readable by a computer system and storing instructions or execution by the computer system for performing a method comprising: retrieving a media content subset from a media content source; saving the received media content subset at a computing system; generating metadata by processing the media content using the computing system; associating generated metadata with media content to facilitate the visualization and navigation of the media content, thereby visually presenting associative information parameters of the media content enabling visual navigation of the media content; and adding the metadata to at least one metadata database for retrieval of metadata elements, wherein the metadata generated is a synchronized textual transcript of the audio recording, and the synchronized textual transcript includes time offsets of recorded words.
 14. The computer program product of claim 13, wherein the digital media file is an audio recording.
 15. The computer program product of claim 13, wherein the metadata is generated from components other than the digital file included in the media content. 